Mechanically controlled power brake unit
Patent 4246755 Issued on January 27, 1981. Estimated Expiration Date: 
March 2, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 2, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3072106 3127966 3222868 3408899 3689013 InventorApplicationNo. 06/016866 filed on 03/02/1979US Classes:60/547.1, With control of or by a separate power fluid, etc.60/583, Pulse fluid vessel embracing output piston and fluid displacing element60/594, Having cam, or lever system driving master92/169.2With reinforcing memberExaminersPrimary: Hershkovitz, AbrahamAttorney, Agent or FirmInternational ClassesB60T 13/567 (20060101)B60T 13/52 (20060101) Foreign Application Priority Data1978-04-04 DEAbstractThe power brake unit comprises a master cylinder, a booster utilizing the pressure difference between a vacuum and atmospheric pressure including a vacuum casing, and a cage-like housing structure embracing the vacuum casing and secured to a splashboard of a vehicle, with the master cylinder and the vacuum casing being secured to the housing structure in an operative relationship. The power brake unit is thereby supported by the housing structure in a manner to substantially reduce the lost travel of the brake pedal due to axial extension of the vacuum casing experienced in prior art arrangements caused by applied braking forces and enables a reduction of weight of the power brake unit since lighter weight materials may be employed in the various components of the power brake unit.Field of SearchPulse fluid vessel embracing output piston and fluid displacing elementHaving fluid motor driving piston of master unit Having cam, or lever system driving master Flow in recirculating circuit controlled Mechanical feedback to manual control controls power fluid to establish position of working member of master With distinct piston or diaphragm exposed to pulsator pressure imparting feel to manual control | |
